The Java Interface (java8 new features)

{class SubClassTest public 
   
   public static void main (String [] args) { 
      SubClass new new SubClass S = (); 
      
// s.method1 (); 
// SubClass.method1 (); 
      // knowledge 1: Static defined by the interface The method can only be called via the interface. 
      CompareA.method1 (); 
      // Knowledge Point 2: The object implementation class, you can default interface method calls. 
      // If the implementation class overrides the default interface methods, when called, the call is still after rewriting method 
      s.method2 (); 
      // Knowledge Point 3: If the parent class subclass (or implementation class) inheritance and the interface is declared with the same name as the default method parameters, 
      // so in the case of the subclass does not override this method, the default method is invoked the same name in the parent class with parameters. -> principle of giving priority class 
      // 4 knowledge: if the implementation class implements multiple interfaces, multiple interfaces which define the parameters of the default method with the same name, 
      in the case // then there is no override this method in the implementation class an error message. -> Interface conflict. 
      // This requires that we have to override this method implementation class 
      s.method3 (); 
      
   } 
   
} 

class SubClass the extends the SuperClass the implements CompareA, CompareB {
   
   void method2 public () { 
      System.out.println ( "SubClass: Shanghai"); 
   } 
   
   public void method3 () { 
      System.out.println ( "SubClass: Shenzhen"); 
   } 
   
   // Knowledge Point 5: How subclass call (or implementation class) the method of the parent class, method interface is rewritten 
   public void the myMethod () { 
      the method3 (); // call to their overridden method defined 
      super.method3 (); // call is declared parent class 
      // call the default interface methods 
      CompareA.super.method3 (); 
      CompareB.super.method3 (); 
   } 
}